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1. Suppose Subway has carried out the study, using the sample size determined in that exer- cise, and 27.5% of the franchisees say they are pleased with their relationship with Subway. Construct and interpret the 95% confidence interval for the population percentage.
2. A research firm wants to be 90% confident that a population percentage has been estimated to within 3 percentage points. The research manager calculates the necessary sample size with 0.5 as his estimate of the population proportion. A new business school graduate who has just joined the firm questions the research manager further, and they agree that the pop- ulation proportion is no more than 0.3. If interviews cost $10 each, how much money has the new graduate just saved the company?
Represent the data given below with a suitable diagram. Draw a histogram and a frequency polygon for the following data.
Compute the means for the following set of scoresusing IBM SPSS software. The data sets can be found through the Sage Materials in the Student Textbook Resource Access link, listed under Academic Resources. The following set of scores are saved as..
A contractor is considering a sale that promises a profit of $32,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $9000 with a probability of 0.3. What is the expected profit?
a normal distribution has a mean of m 80 with s 20. what score separates the lowest 30 of the distribution from the
what is the method to prove a cumulative distribution function of frechet distribution?complete
Create the 90% confidence interval for mean score of all such subjects. You may suppose scores are usually distributed.
Based on the scatter diagram, does there appear to be any relationship between the number of assemblers and production? Explain.
a health care facility is interested in monitoring the primary c-section rate. monthly data on the number of c sections
For each of the three factors (smoking, alcohol, and body mass index), rearrange the data into a 3 x 2 table; the other column is for those without gallstones.
Many people believe that abnormal behavior is more likely to occur during a full moon. As a test for empirical evidence to support this belief, a study was conducted based on admission of new clients over a one year period by lunar phases:
Compute the values of the limits for the X and S charts and wstimate the value of σ on the assumption that the process is in statistical control.
The floor plan of a house is rectangular. The house's length is 2x-10 and its width is x+3. Write an expression for the area of the house
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